Recommended update for net-snmp

This update for net-snmp fixes the following issues:

Update to net-snmp-5.9.4 (bsc#1214364 jsc#PED-6435).

* 5.9.4:

- libsnmp:

- Remove the SNMP_SWIPE_MEM() macro Remove this macro since it is not
used in the Net-SNMP code base.
- DISPLAY-HINT fixes
- Miscellanious improvements to the transports
- Handle multiple oldEngineID configuration lines
- fixes for DNS names longer than 63 characters

- agent:

- Added a ignoremount configuration option for the HOST-MIB
- disallow SETs with a NULL varbind
- fix the --enable-minimalist build

- apps:

- snmpset: allow SET with NULL varbind for testing
- snmptrapd: improved MySQL logging code

- general:

- configure: Remove -Wno-deprecated as it is no longer needed
- miscellanious ther bug fixes, build fixes and cleanups

- security:

- These two CVEs can be exploited by a user with read-only credentials:

- CVE-2022-24805�A buffer overflow in the handling of the INDEX of
NET-SNMP-VACM-MIB can cause an out-of-bounds memory access.
- CVE-2022-24809�A malformed OID in a GET-NEXT to the nsVacmAccessTable
can cause a NULL pointer dereference.

- These CVEs can be exploited by a user with read-write credentials:

- CVE-2022-24806�Improper Input Validation when SETing malformed
OIDs in master agent and subagent simultaneously
- CVE-2022-24807�A malformed OID in a SET request to
SNMP-VIEW-BASED-ACM-MIB::vacmAccessTable can cause an
out-of-bounds memory access.
- CVE-2022-24808�A malformed OID in a SET request to
NET-SNMP-AGENT-MIB::nsLogTable can cause a NULL pointer dereference
- CVE-2022-24810�A malformed OID in a SET to the nsVacmAccessTable
can cause a NULL pointer dereference.
- To avoid these flaws, use strong SNMPv3 credentials and do not share them.
If you must use SNMPv1 or SNMPv2c, use a complex community string
and enhance the protection by restricting access to a given IP address range.
- Thanks are due to�Yu Zhang of VARAS@IIE and Nanyu Zhong of VARAS@IIE for
reporting the following CVEs that have been fixed in this release, and
to Arista Networks for providing fixes.

- IF-MIB: Update ifTable entries even if the interface name has changed
At least on Linux a network interface index may be reused for a
network interface with a different name. Hence this patch that
enables replacing network interface information even if the network
interface name has changed.

- unspecified:

- Moved transport code into a separate subdirectory in snmplib
- Snmplib: remove inline versions of container funcs'.

- misc:

- snmp-create-v3-user: Fix the snmpd.conf path @datadir@ is
expanded in ${datarootdir} so datarootdir must be set before
@datadir@ is used.

* 5.9:

- snmplib:

- Add IPv6 support to DTLSUDP transport
- use new netsnmp_sockaddr_storage in netsnmp_addr_pair
- add base_transport ptr for tunneled transports
- Dtls: overhaul of debug
- Remove inline versions of container funcs

- snmpd:

- Use ETHTOOL_GLINKSETTINGS when available Newer Linux kernels
support ETHTOOL_GLINKSETTINGS. Use it when available instead of the
older and deprecated ETHTOOL_GSET. This patch avoids that the Linux
kernel reports the following kernel warning: warning: 'snmpd' uses
legacy ethtool link settings API, link modes are only partially
reported See also https://sourceforge.net/p/net-snmp/patches/1387/.
- [BUG 2926]: Make it possible to set agentXPingInterval for a
subagent - register agentXPingInterval for the subagent list
handler, before it was registered for snmp - added agentxTimeout to
the subagent list handler. It's now possible to set for snmpd and
the subagent. See 'man snmpd.conf' - added agentxRetries to the
subagent list handler. See 'man snmpd.conf'. It's never used in the
subagent, but it's now following the documentation Signed-off-by:
Anders Wallin <wallinux@gmail.com>

- snmptrap:

- BUG: 2899: Patch from Drew Roedersheimer to set library
engineboots/time values before sending

- snmptrapd:

- Add support for the latest libmysqlclient version

- libsnmp:

- Scan MIB directories in alphabetical order This guarantees that
e.g. mibs/RFC1213-MIB.txt is read before mibs/SNMPv2-MIB.txt. The
order in which these MIBs is read matters because both define
sysLocation but with different attributes.

- Removing legacy MIBs used by Velocity Software (jsc#PED-6416 jsc#PED-6434).
- Added hardening to systemd service(s) (bsc#1181400, bsc#1206044).